The first Men Behind the Sun marked the beginning of the Category III (CAT III) movies, the extreme graphic violence and the historical theme made Men Behind the sun going to the highlights, apparently, it grossed enough money for make a "sequel".Men Behind the sun II is directed by Godfrey Ho (remember Ninja Thunderbolt ? Ninja Terminator ?), the greatest Hong Kong B-movie director.This is more a remake than a sequel, with the only difference is that we don't see the cadet's "point of view".Men Behind the Sun II is the most violent and nasty (at least in my opinion) of the whole Man Behind the sun Quadrilogy, it includes the most disgusting autopsy scene ever filmed.The special effects are realistic, shocking and gross.The English dub is cheesy.Many people complained at the time that T.F Mou made Men Behind the Sun just for make some cash on this sad story, actually, i think that the guy who did this is Godfrey Ho, compare the original with this sequel/remake, you will notice that there is something "lacking": the historical content and the philosophy and the message.

Laboratory of the Devil is essentially more of a exploitive rip-off / cash-in on the first Men Behind the Sun film. It does include all the gore and nastiness of the original film, but only because it's pretty much a scene-for-scene recreation of it.It is years after the war has ended and the American government have called together all the surviving doctors from Unit 731 to offer them large amounts of money for them to continue their research into biological weapons. From here on out the rest of the film is told via flashbacks concerning the activities of Unit 731 during the war. This time we see the atrocities through the eyes of a young soldier who has been drafted and forced to leave his young wife behind to wait for his return. As he witnesses the treatment of the Chinese and the "experiments'' being carried out, he feels remorse at the crimes of his fellow countrymen and ultimately rebels.The majority of the experiments and tortures on display here are taken as is straight from the first film - we have the hot / cold temperature tests ending in skin flayed from the bone, deliberately infecting subjects with Bubonic Plague, live vivisection, freezing limbs in liquid nitrogen then smashing them, etc, etc. The only major difference here is in the last half hour where the film deteriorates into a melodramatic action flick with Kung-fu and pointless heroics.Due to being pretty much a straight-up exploitation film, Laboratory of the Devil looses the impact of its predecessor. It has goofy "comic relief'' scenes, some nudity, the aforementioned action sequences and an extremely trashy synth score, all of which combine to make it rather hard to take seriously.All things considered though, its not an awful film and if I hadn't recently seen the first MBTS I probably would have dug it a lot more. There's plenty of gore and torture so I'd recommend it to all you rabid gorehound's out there, but if you're looking for a sequel as powerful and shocking as Men Behind the Sun, avoid or check out the excellent Black Sun: The Nanking Massacre by MBTS director TF Mous instead. 6/10

I've not seen "Man Behind the Sun" or "Evil Dead Trap" or that many Asian horror films. That said, this movie is more gruesome than almost all European and of course American movies that I have seen. It is not quite as disturbing as "The Untold Story" from Hong Kong. I ran to the computer to make sure the autopsy early in the film was not real. I did not really find anything on the web that proved to me otherwise. The naked girl does not look like a dummy and the dry limbs being sawed off, that's shocking. I'm not sure that if it was a real corpse, that it was then material taken from stock footage. Anyway, it blows away the first film in the "Guinea Pig" series, which has a very low budget and poor production values. This movie has a large cast and does not skimp on special effects. All the gun deaths result in blood splatter. In more lazy gore films they sometimes don't bother and you get a silly PG moment. The first half of the film is heavy and serious and I was afraid each upcoming scene would make me squirm. Then the movie becomes over-dramatic and unrealistic with scenes that bring to mind "The Story of Ricky". This is an exploitation film more than a movie trying to make a statement about history. The end will have you laughing and perhaps will help ease the guilty brought on by enjoying earlier scenes of gore that are based on real human death camps. Recommended.

He nailed this movie right on the head...I agree with everything he says. I found this movie at the Cleveland Public Library's audiovisual department,and being a lover of foreign horror films,I had to see it. I wound up fast-forwarding past all the talking and watching the nasty bits,which are laughable beyond belief. Of course,if you're not a nutcase like me,this movie may sicken you,but the special effects aren't quite special enough to even do that...